[Unit]
Description=Autostart
After=multi-user.target

[Service]
Environment=LD_LIBRARY_PATH=/home/pi/bin
ExecStart=/home/pi/bin/Server
Restart=on-failure
RestartSec=3
User=root
Group=root

[Install]
WantedBy=multi-user.target

● autostart.service - Autostart
   Loaded: loaded (/lib/systemd/system/autostart.service; enabled; vendor preset: enabled)
   Active: inactive (dead)

● autostart.service - Autostart
   Loaded: loaded (/lib/systemd/system/autostart.service; enabled; vendor preset: enabled)
   Active: active (running) since Fri 2017-10-20 12:06:39 CEST; 2min 32s ago
 Main PID: 1189 (Server)
   CGroup: /system.slice/autostart.service
           ├─1189 /home/pi/bin/Server
           └─1198 /home/pi/bin/Client

Oct 20 12:06:40 localhost Server[1189]:   some output from my application